package com.ray.study.sample.test.spock.mapper;

import com.ray.study.sample.test.spock.entity.User;

/**
 * UserMapper
 *
 * @author ray
 * @date 2020/5/16
 */
public interface UserMapper {

    User findById(Long id);

    User findByUserName(String userName);

    void save(User u);

}
